package jdbclianxi20250325;

import com.alibaba.druid.pool.DruidDataSource;

import java.sql.Connection;
import java.sql.DriverManager;
import java.sql.SQLException;

/**
 * 使用当前类管理数据库连接
 */
public class DBUtil {
/*
static {
        //驱动加载一次即可
        try {
            Class.forName("com.mysql.cj.jdbc.Driver");
        } catch (ClassNotFoundException e) {
            e.printStackTrace();
        }
    }

    public static Connection getConnection() throws SQLException {
        return DriverManager.getConnection(
                "jdbc:mysql://localhost:3306/tedu?characterEncoding=utf8&useSSL=false&serverTimezone=Asia/Shanghai&rewriteBatchedStatements=true",
                "root",
                "root"
        );
    }
    */
    private static DruidDataSource druidDataSource;
    static{
        druidDataSource = new DruidDataSource();
        druidDataSource.setUrl("jdbc:mysql://localhost:3306/tedu?characterEncoding=utf8&useSSL=false&serverTimezone=Asia/Shanghai&rewriteBatchedStatements=true");
        druidDataSource.setUsername("root");
        druidDataSource.setPassword("root");
        druidDataSource.setInitialSize(5);
        druidDataSource.setMaxActive(20);
    }

    public  static Connection getConnection() throws SQLException{
        return druidDataSource.getConnection();
    }
}
